CANopen EtherCAT and Modbus-TCP

CANopen:

The CANopen communication protocol, based on CAN (Controller Area Network), is used to network complex equipment/systems. CANopen networks provide point-to-point connections for service data objects (SDO, e.g. parameters and diagnostics) and multicast connections for process data objects (PDO).

The advantages of Festo products for CANopen:

Support for the LSS protocol for bus configuration of the CPX bus node

Extensive diagnostics e.g. via LEDs as well as the option of defining device behaviour in the event of an error

EtherCAT: Characterised by short cycle times and very precise, almost jitter-free synchronisation. Continuous communication with CANopen is possible based on standardised profiles.

The advantages of Festo products for EtherCAT:

Support for Modular Device Profiles (MDP), for easy configuration

Mailbox functions CoE (CAN over EtherCAT) FoE (file access over EtherCAT) and EoE (Ethernet over EtherCAT) are available

Extensive diagnostics e.g. via LEDs as well as the option of defining device behaviour in the event of an error

Modbus-TCP:

The simply structured data model is based on a client/server architecture and transfers data inside TCP/IP packets. Modbus is thus fully compatible with standard Ethernet networks.

Festo has more than 20 years of experience in communication via Modbus-TCP and offers a wide range of products including vision systems for trouble-free integration into Modbus networks.